test(mqtt): Sparkplug array metrics in the simulator + live gate (lmxopcua#770)

The simulator now packs Int32/Boolean/Float/Double/String arrays per the
Sparkplug B spec (independent of the driver codec) and seeds Profile, Flags
and Curve in the standalone catalog. SparkplugLiveTests gains a live test that
asserts typed int[]/bool[]/float[] values from the birth, a changed vector
(including a different Boolean length) from alias-only DATA, the read path,
and BadTypeMismatch for an array metric bound without isArray. Run against a
throwaway local Mosquitto; mutation-checked (scalar binding / seed removed).

Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Mqtt.IntegrationTests/SparkplugSimulator/Program.cs

@@ -75,7 +75,12 @@ foreach (var node in nodes)
         new SparkplugMetricSeed("Pressure", 2, DataType.Double, 101.325d),
         new SparkplugMetricSeed("Count", 3, DataType.Int32, -42),
         new SparkplugMetricSeed("Running", 4, DataType.Boolean, true),
-        new SparkplugMetricSeed("Serial", 5, DataType.String, $"{node}-001"));
+        new SparkplugMetricSeed("Serial", 5, DataType.String, $"{node}-001"),
+
+        // Array metrics (lmxopcua#770): bind with "isArray": true.
+        new SparkplugMetricSeed("Profile", 6, DataType.Int32Array, new[] { 1, -2, 300000 }),
+        new SparkplugMetricSeed("Flags", 7, DataType.BooleanArray, new[] { true, false, true, true, false, false, true, false, true }),
+        new SparkplugMetricSeed("Curve", 8, DataType.FloatArray, new[] { 0.5f, 1.25f, -2.5f }));
 
     edge.SetDeviceMetrics(
         "Filler1",